Ribbon feeding and reversing mechanism for adding-machines.



W. GALLAM.

RIBBON FEEDING AND REVERSING' MECHANISM FOR ADDING MACHINES.

APPLICATION FILED JUNE 11, 1908.

917,246. Patented Apr. 6, 1909.

3 SHEETS-QHEET 1.

Attest: www, Inventor: ;W77

@DMAU v y W. GALLAM.

RIBBON FEEDING AND REVERSING MECHANISM FOR ADDING MACHINES.

APPLICATION FILED JUNE 11, 1908.

Patentd Apr. 6, 1909.

3 SHEETS-SHEET 2.

W. CALLAM.

RIBBON FEEDING AND REVERSING MECHANISM F03. ADDING MACHINES.

' APPLICATION FILED JUNE 11, 190B.

917,246. 7 Patented Apr. 6, 1909.

3 SHEETS-SHEET 3.

6% llll A itest: inx enter:

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by 'mawflm 1 State of Pennsylvania,

ribbon wound suilicientl y compact IILLIAM CALLAM, or WILKES-saline,PENNSYLVANIA, Assiesoa r0 THE ADDERMAOHINE COMPANY, OF KINGSTON,

PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

RIBEONv FEEDING AND REVERSING MECHANISM FOR A DDING-MACHINES.

N0. 917,2ee.

Specification of Letters Patent.

Patented April '6, 1909.

Application filed June 11, 1908. Serial No. 437,818.

To all whom it may camera:

Be it known that I, WILLiAM OALLA M, a citizen of the United States,residing at Wilkes-Barre, in the countyof Luzornc and have inventedcertain new and useful improvements in .Ribbon Feeding and ReversingMechanisms for Adding-Machines, of which the following is aspecification.

The invention relates to. ribbon feeding and reversing, mechanisms foradding machines, and the like, and its novelty consists in theconstruction and adaptation of the parts, as will be more fullyhereinafter pointed out Specifically the invention is an improvementupon the ribbon feeding and reversing mechanism used on the well knownWales adding machine, described in Letters Patent of the United StatesNo. 796,024, issued August 1, 1905. In the use of the Wales machine, aswith other machines of this same general nature, .-.onsidcrable troublearises due to the strains incident to reversing mechanism. It wasnecessary the ribbon moving to have the upon the spools to reverse themovement immediately after therelease of the mechanism and it Wasdiil'icult to secure the degree of compactness of windingof the ribboni1ecess:'n' v to its prompt and eilicient action.

The ob'ect of the present invention is to use the ribbon merely as ameans for setting the reversing mechanism which latter is tl'rcrcafteractuated by power derived from the main. shaft of the machine, relievingthe ribbon from the duty of itself actuating the reversing mechanism.

in the drawings, Figure view of a portion of an adding; and. printingmachine provided with my invention; Fig. .2 is a similar view with theribbon spools and some other parts removed; Fig. 25 is a detail top planView of the left spool with its upper disk removed Fig. 4 is a viewsimilar to Fig. 3 but of the right spool. in Fig. 3 the ribban is shownalmost completely wound on the left spool and in Fig. 4 the ribbon isshown almost completely unwound from the right s 001. Fig. 5 is a sideelevation of the parts s iown in Fig. 1. Fig. 6 is a detail plan view ofthe iositionoia, Fig. 7 is a detail plan view 0 the mechanism beneaththe brought upon the ribbon 1 is a top plan right spool and Fig. 8 is adeiiail oi' the revcrsin lever.

in tie drawings, a represents part of the frame of an adding; andprinting machine the type bars being indicated at b and the faces of thetype at c. v

The inking ribbon is represented at 50 and is adapted to be passed infront of the typefaces along the line of print, so that the impact ofthe type will force the ribbon smartly against a suitable platenprovided for that purpose press the ink against the paper carried by theplaten to receive the impression of the particular type or typesactuated.

A bracket d is provided on the frame of the machine. On this is pivoteda yoke 12 adapted to be reciprocated on its pivot 13 by means of a link10 connected to a crank 11 secured to a rock shaft 15 mounted in asrmplomentary frame 16 and which shaft is rocked at each actuation ottheniain shaft of the machine throu h mcchanism not shown and irrelevant tothe present descriptlon.

14 and.14() are two pawl rods pivoted at 144 and 145 respectively to theyoke 12- and which by its oscillations are reciprocated longitudinallyof the machine. 146 are pawls upon these rods and are adapted to engagewith the teeth 21 formed on the peripheries of the wheels 20 of theribbon spools 41. The pawls 146 are yieldingly held in engagen'ient withthe teeth 21 by means of grasshopper-springs 100 which also serve tomove the pawl rods as hereinafter described. The wheels 20 are eachsecured upon a vertical shaft to which is keyed a ribbon spool 41provided with two guid disks 40. pending from the frame a is acylindrical flange 220. Below-it is a disk 221. and below it a similardisk .223, both keyed to the shaft. Bet-ween them is a coiled tensionspring .2222 serving as a yielding frictional connection between theshaft 22 and the frame a. A lever 24. is loosely mounted to oscillate oneach shaft .22. They areeach provided with a transverse pin 23 the lowerend of which is engaged by the spring 100 and the upper end of which isengaged by the reversing lever hereinafter referred to- "A cross rod 600connects the lovers 2-4 together and causes them to move in unison.

(and which is not shown) to lleneath each 'wheel 30 and de-' asettinglever 410,. pivotally mounted at 4112 on the lower disk 40 and undertension of a spring 413 constantly tending to pull it away from thecenter of the spool. When it is pulled outward as far as it willgo itsextremity 430 projects beyond the periphcry of the disk. I

60 is a reversing elbow lever secured to the. frame a of the machine bya pivot 6.1. Its front arm 62 is bent upwardly at 63 to bring it abovethe level of the link 10 so that Y its extremity 64 will engage with theupper end 55 of a pin 56 secured to the yoke 12 and passing through thelink 10. The rear arm of the lever 60 is provided with a iinger 66projecting upwardly to engage with the tip 430 of the setting lever 410.The lever 60 is further provided with a stop arm 67 adapted to engage apin 68 securedto the frame a, and with an car 69 between which and thepin 68 is a spring 690 which serves to keep the arm 67 in contact withthe pin 68.

Secured to the frame a of the rnachine by a pivot 71 near the leftspoolis a, positioncr having two notches 7 2 and 73 adapted to engagewith a roller detent 74 mounted beneath the left lever 24, and providedwith a spring 75 adapted to maintain said engagement. The notches 72 and73 correspond substantiall to the correct position of the detent 74wlien the pawl 146 is out of and in engagement with the teeth 21 ofthewheel .20. ltserves to fix the )osition of the lever 24 accurately whenit has been moved to either one of its two positions. it is providedwith two guard arms 76 which prevent its accidental disengagenwnt fromthe detent 74.

The mode of operating the device is as follows :Suppose the parts are inthe respec against the teeth 21 of the left whee 20, and

therefore rotates the shaft 22 and left ribbon spool intermittently andby a ste by step motion. The detent 74 is also he d in the notch 73 ofthe positioner 7 (l and the setting lever 410 of the left wheel iscompletely within the periphery of said wheel while the setting lever410 of the right wheel has moved outside of the peripherygriof its wheel(see Fig. 4) because the ribbon 50 no longer confines the pin 410 in theinner end of the slot 420 and the spring 413 has caused the lever 410 onthe right wheel to move away from the spool 41. The next actuation ofthe main shaftof the machine moving the ribbon 50 toward the leftanother step, in the manner well understood in the art, causes the rightspool 41 and disk 40 to rotate and moves the extremity 430 of rightlever .410 against the finger 66 of the reversing lever 60 and swingsthe latter on .its pivot 61 bringing its end 64 back of the upper end 55of the pin 56, just as the yoke 12 has moved to permit of such movementof the lever 60 (see Fig. 7). At 'thenext actuation of the main shaft,the link 10 is reciprocated as usual. Its pin 56 engages the end 64 ofthe lever 60 and swinging the latter on its pivot brings the arm 65 intocontact withthe pin 23 andmoves the right lever 24, the connecting bar600 and left lever 24, caiising the roller detent 74 to pass from thenotch 73 to the notch 72. The movement of the levers 24 has beencommunicated to the pawl rods 14 and 140 through the grasshop )ersprings 100 and has caused theriglit pawl rod 14 to engage with theteeth21 on the right wheel 20 and the left pawl rod 140 to disengagefrom the teeth 21 on the left wheel 20. The next actuation of the mainshaft will cause the right wheel to rotate one step in the reversedirection.

As this continues the ribbon is wound on the right spooland unwound onthe left spool and, asji th e winding continues, the ribbon encirclesand incloses the right pin 411 and pulls it back into the slot 420 andso brings the end 430 of the right lever410 again wit 1 in the.periphery of. the right disk 40. The continued rotation of the rightwheel will, as

the ribbon is unwound. from the left wheel,

finally bring into operation the reversing mechanism attached to thatwheel and cause the direction of movement of the ribbon spools to beagain reversed.

As will now readily be understood the im proved device provides meanswhereby the reversing of the ribbon is caused by the actuation of themain shaft by a direct connection therewith and no longer entirelydepends upon the mere pull of the ribbon as it. is

.wound on its spool, but the movement of'the ribbon serves merely toallow the setting lever to be moved to its. operative position whenthereafter the power to actuate the reversing lever comes from the mainshaft of the machine and not from the tension on the ribbon.

What I claim as new is 1. In an adding and printing machine having amain shaft, a ribbon moving mechanism comprising a ribbon spool, aribbon thereon, an actuating pawl therefor, a setting lever normallyheld in an inoperative posithereon, an actuating pawl. therefor, asetting arms/e tion by the ribbon on the spool, a reversing leveradapted to be actuated from the main shaft of the int-shine; to move theactuating pawl out ofan engaging position with the ribbon spool, andautomatic means for moving the setting lever into engagement with thereversing lever when the ribbon. is onwound.

2. In an adding and printing machine hav ing a main shaft, ribbon mcvingmechanism comprising a ribbon spool, a ribbon thereon, an actuating pawltherefor, a setting lever normally held in an inoperative p0si' tion bythe ribbon on the-spool, a reversing lever adapted to be actuated fromthe main shaft of the machine'to move the actuating pawl out ofanengaging position with the ribbon spool and automatic means tor movingthe setting lever into engagement with the reversing'lever when theribbon is unwound, comprising a slot 420 and a retracting s ring 413.

3. 11 an adding and printing mnchine havmg a main shaft, a ribbon movingmechanism comprising a ribbon spool, a ribbon lever normally held in aninoperative posi tion by the ribbon on the spool, reversing leveradapted to move the actuating p'awl out of an engaging position with theribbon spool, automatic means for moving the -re versing lever into thepath of a reciprocating part of the machine whereby the energy formoving the actuating pawl from its engaging position-is derived from themain shaft of the machine.

'4. In an adding and printing machine l1oving amain' shaft, a ribbonmoving mechanism comprising a ribbon spool, a ribbon thereon, a ratchetwheel on the spool shaft, an actuating pawl therefor and a connectionbetween the pawl and the main shaft of the machine whereby the ositionof the pawl with relation to the rate et wheel is changed, comprising areciprocating part of the machine, a reversing lever and a setting levernormally held in an inoperative position by the ribbon wound on thespool but adapted to move against the reversing lever to bring it intothe path of said reciprocating part when the ribbon is unwound.

5. In an adding and printing machine hav ing a main shaft, a ribbonmoving mechanism comprising a ribbon spool, a ribbon thereon, a ratchetWheel on the spool shaft, an actuating pawl therefor and a connectionbetween the pawl and the main shaft of the machine whereby the positionoi' the pawl with relation to the ratchet wheel is changed, comprising areciprocating part of the machine, a reversing lever, a setting levernormally held in an inoperative position by the ribbon wound on the s001, and automatic means to move the setting lever into an op erstiveposition and against the reversing lever.

(i, in an adding and printing machine having a main shaft, a ribbonmoving mechanism comprisin a ribbon spool, a ribbon thereon, a rate etwheel on the spool shaft, an actuating pawl thereforanda connectionbetween the pawl and the main shaft of the machine whereby the I ositionof the. pawl with relation to the ratc et wheel is changed, comprising areciprocating part of the machine, a reversing lever, a setting meansand automatic means to move the setting lever against the reversinglever, comprising a pm on the setting lever held by the ribbon and a lspring tending to act against the same. 7, In a ribbon feedingmechanism, the combination of a ribbon spool, an actuating pawltherefor, means for reciprocating the pawl, means for moving theposition of the pawl with respect to the spool, comprising a reversinglever, means for moving, it into the path of the pawl reciprocatingmeans, and a connection between the reversing lever and the pawl,consisting of a s ring adapted to be moved b the reversing ever andsecured to the pawl.

8. in an adding and printing machine, a

ribbon handling mechanism comprising two spools on one of winch therlbbon 1s Woundas it is unwound from the other, actuating pawls, one foreach spool, a connection be tween the pawls, reversing levers ada ted tobe actuated from a moving part c the machine and setting levers normallyheld inoperative by the ribbon wound on the spool whereby one of thereversing leversis tripped into an engaging posltion with such movingpart when the ribbon. is" unwound from one of the spools.

9. In an adding and printing machine, a

ribbon handling mechanism comprising two spools on one of which theribbon is wound as it is unwound from the other, actuating pawls one foreach spool, a connectlon between the pawls, reversing levers adaptedtobe operated by a moving part of the ma-' chine actuated from the mainshaft, setting, levers normally held inoperative by i the ribbon woundon one of the spools ,whereby one of the reversing lovers is trippedinto an engaging position with such moving part when the ribbon i'sunwound from one of the spools, and a detent adapted to hold the partsin the positions into which they have thus wound from the other spool.

In testimony whereof I affix my. signature 'in presence of twoWitnesses.

WILLIAM oALLAM.

Witnesses v HENRY A. GORDON, M. E. S'rUoH.

been moved until the ribbon is un-

